Coastal region on the Antarctic continent, where it is under the influences rnboth of ocean and ice sheet, as well as frequent human activities, could be considered as rna fragile zone in Antarctic ecological environment. There are many lakes in coastal rnregion, showing much differences from each other in physical-chemical features because rnof individual evolutionary history in their geographical environments, and suffering rnfrom different outside factors, such as climate changes and precipitation. Thus, it rnresults in respective biological distribution and ecological structure in lakes. The present rnpaper reports the results from the studies of chemical components, species distributions rnand community structures, which mainly consisted of planktons in lakes in the Vestfold rnHills (68°38＇S, 78°06＇E), and the Larsemann Hills (69°30＇S, 76°20＇E), East rnAntarctica. It also treats the biological diversities and nutrient relationships of these rndifferent types of lakes. So as to provide more scientific basis for monitoring of climate rnchanges and environmental protection in Antarctica.
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